Artificial stone



(No Model.)

, E: BOEHM.

ARTIFICIAL STUNE. No. 569,002. Patented ont. 6, 1896.-v

v UNITED STATES PATENT @EEicEg EDYARD IIOEHM, OF IYOODBURY, SEXY JERSEY.

RTlFlClA'L. STGN-E.

SPECIFICATION forming part Of Letters Patent No. 569,002, dated October 6, 1896.

nation filed March 21, 1896. Serial No. 584,256. (No model.)

To all when t muy concer/1.:

Be it known that I, EDWARD Bonini, a citizen of the United States, residing at Woodbury, in lthe county of Gloucester and State of New Jersey, have invented certain new and useful Improvements in Artificial Stone, of which the following is a specification.

My invention relates to a new and useful improvement in building-blocks, and has for Io its Object to provide a block of this description which may be applied to a frame building, giving the effect of a stone or brick building, and which also may be used for inside tiling and be applied to the Wooden surfaces of interior Walls to produce the desired effect.

lVit-h these ends in view my invention con'- sists in the details of construction and combination of elements hereinafter set forth, and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, I Wil-l describe its construction and operation in detail, referring by letter to the accompanying 2 5 drawings, forming a part of this specification,

and in Which- Figure l is a perspective of a section of a Wooden surface having a number of my improved blocks applied thereto; Fig. il, a horizontal section thereof, and Fig. 3 a vertical section thereof.

In carrying ont myinventon I provide a number of blocks A, which are preferably molded of terra-cotta or other suitable matcrial into the shape adapted to give the desired effect, and each of these blocks when completed is provided with a groove I5 in one of its edges, a tongue C upon the opposite edge, a scmdovctail groove l) upon the in- 4o ner side of one of the edges at right angles to the tongue and groove, and a semidovctail flange E upon the inner side of the opposite edge. Upon the edge of the block which is providedwith the tongue a ledge Fis formed,

of sufficient width to accommodate the holes formed therethrough for the passage of the screws G, and these screws serve the purpose of securing the block to the surface Il.

To face a wooden surface with blocks made in accordance with my improvement,it is only necessary rto start from the proper corner of said surface and,aft er seeurin g the first block in place by the screws so that the underlapping flange E and groove B will be exposed, the next block in either the horizontal row or the vertical tier is secured in vplace' by matching its proper edge to either the groove or the flange and the insertion of the screws. This process is continued until the entire surface is covered, when the effect Will be that of a solid-built wall of the material which the blocks represent. l

In forming the blocks I prefer to reduce their Weight so far as possible by hollowing out the under side, which will lessen the strain put upon the screws in holding the blocks in place.

One of the principal advantages of myini provement is that the blocks are firmly secured in position by the use of but few screws for each. block and vthat no cement or other joining material is necessary", ye'i; Whena surfaceis completely covered by these blocks the "latter will be so intcrlocked with each other as to form a perfectlyrrigid surface, and in practice a surface may be covered with but little labor and by persons of little experience, consequently materially reducing the cost of such work.

'\While I have squares and representing rough-hewn stone, it is obvious that any shape might oe given to these blocks, as Well as a surface repre senting any building material; andfor inside work, such as tiling, this surface Would preferably be plain or slightly projecting orna mentation` Having thus fully described my intention, what I claim as new and useful is-,

l. A building-block consisting of a body having a tongue and groove formed upon two opposite sides thereof, a semidovetail groove tpl-med on the inner part of the third side, and a semidovetail flange formed on the inner part of the fourth side, as and for the purpose described.

2. A building-block consisting of a molded representation of stone having a tongue and shown the blocks formed in o ledge onone'side, ay corresponding groove and In testimony whereof I have hereunto affixed flange on the opposite side, said ledge having my signature in the presence of two subscribapertures to `receive Screws, a, semidovetail ing wit-n esses.

grooveformed `01 1 the inner edge of the third EDXVARD BOEHM. side and a corresponding semidovetail iange Witnesses: Y

formed on the inner-.edge of the fourth side, S. S. WILLIAMSON,

'as and for the purpoe. described. MARK BUFORD. 

